54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
import ImageLayer from '../src/ol/layer/Image.js';
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import ImageWMS from '../src/ol/source/ImageWMS.js';
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import Map from '../src/ol/Map.js';
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import View from '../src/ol/View.js';
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const wmsSource = new ImageWMS({
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url: 'https://ahocevar.com/geoserver/wms',
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params: {'LAYERS': 'ne:ne'},
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serverType: 'geoserver',
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crossOrigin: 'anonymous',
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});
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const wmsLayer = new ImageLayer({
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source: wmsSource,
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});
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const view = new View({
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center: [0, 0],
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zoom: 1,
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});
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const map = new Map({
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layers: [wmsLayer],
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target: 'map',
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view: view,
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});
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map.on('singleclick', function (evt) {
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document.getElementById('info').innerHTML = '';
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const viewResolution = /** @type {number} */ (view.getResolution());
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const url = wmsSource.getFeatureInfoUrl(
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evt.coordinate,
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viewResolution,
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'EPSG:3857',
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{'INFO_FORMAT': 'text/html'}
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);
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if (url) {
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fetch(url)
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.then((response) => response.text())
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.then((html) => {
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document.getElementById('info').innerHTML = html;
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});
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}
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});
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map.on('pointermove', function (evt) {
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if (evt.dragging) {
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return;
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}
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const data = wmsLayer.getData(evt.pixel);
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const hit = data && data[3] > 0; // transparent pixels have zero for data[3]
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map.getTargetElement().style.cursor = hit ? 'pointer' : '';
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});
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